Files
echolot/echolot-app/app/build.gradle.kts
T
mrambossekandClaude Fable 5 0c5b021b63
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compat: SemVer version windows between app and server
Both sides now declare what they will talk to, and enforce it. Two axes kept
deliberately separate, because conflating them is the trap:

  protocol_version  — CAN these builds talk. The correctness axis. Below 1.0.0
                      the minor is the breaking axis, per SemVer §4.
  release window    — MAY they, per policy. [min, max), advertised in the
                      profile, overridable by the operator.

The server refuses out-of-window apps with 426 and a body naming both versions
and the accepted range; the app checks the profile in both directions before a
run rather than discovering mid-measurement that it will be refused.

Three rules that shape the rest:

  - GET /v1/profile is never gated. It is where a refused client learns which
    version it needs; gating it leaves the user with a network error instead of
    an answer, which is precisely the confusion this exists to remove.
  - An unparseable or absent version is "unknown", and is allowed. Development
    builds report "dev", and a client too old to send the header cannot be
    identified anyway.
  - Bounds sit at breaking boundaries, not at releases, so shipping a patch
    never requires editing a range. The app's server minimum is 0.4.2 for a
    stated reason: earlier multi-homed servers mis-addressed granted sends and
    the client measured 100% downstream loss that never happened.

The app's versionCode is now derived from its SemVer instead of being a second
number someone has to remember to bump.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-08-01 11:36:34 +02:00

84 lines
3.4 KiB
Kotlin

// SPDX-FileCopyrightText: 2026 Echolot contributors
// SPDX-License-Identifier: GPL-3.0-or-later
plugins {
// AGP 9 built-in Kotlin — no kotlin.android here (see core-probe note).
alias(libs.plugins.android.application)
alias(libs.plugins.kotlin.compose)
alias(libs.plugins.kotlin.serialization)
}
// The app's version is SemVer and lives here, once. versionCode is derived from it rather than
// maintained alongside: Play/F-Droid need a monotonically increasing integer, but a second number
// that a human has to remember to bump is a number that eventually disagrees with the first — and
// the version is now load-bearing, since the server decides whether to serve us by it.
//
// major*1_000_000 + minor*10_000 + patch*10 leaves room for 9 patch-level rebuilds (the trailing
// digit) without disturbing the mapping, and stays inside the 2_100_000_000 ceiling until major 2100.
val appVersionName = "0.2.0"
fun versionCodeOf(semver: String): Int {
val (major, minor, patch) = semver.substringBefore('-').split(".").map(String::toInt)
return major * 1_000_000 + minor * 10_000 + patch * 10
}
android {
namespace = "app.echo_lot.app"
compileSdk = 36
defaultConfig {
applicationId = "app.echo_lot.app"
minSdk = 26
targetSdk = 36
versionCode = versionCodeOf(appVersionName)
versionName = appVersionName
// Automation: `adb shell am start -n app.echo_lot.app/.MainActivity --ez autorun true`
// runs a measurement immediately and POSTs the report here (dev collection endpoint).
buildConfigField("String", "REPORT_UPLOAD_URL", "\"http://89.185.109.150:443/report\"")
buildConfigField("String", "REPORT_UPLOAD_SECRET", "\"D4OmG5gGJsElqVVbtYIZbR\"")
// The bare SemVer, without the debug build's "-dev" suffix stripped away by the server's
// parser anyway — sent to servers so they can apply their compatibility window.
buildConfigField("String", "APP_SEMVER", "\"$appVersionName\"")
}
buildTypes {
release { isMinifyEnabled = false }
debug {
// The dev build is a separate app: own package (installs alongside a real
// Echolot), own label and a DEV-badged icon (src/debug/res).
applicationIdSuffix = ".dev"
versionNameSuffix = "-dev"
}
}
compileOptions {
sourceCompatibility = JavaVersion.VERSION_17
targetCompatibility = JavaVersion.VERSION_17
}
buildFeatures {
compose = true
buildConfig = true
}
}
dependencies {
implementation(project(":core-measurement"))
implementation(project(":core-protocol"))
implementation(project(":core-engine"))
implementation(project(":core-probe"))
implementation(project(":core-shizuku"))
implementation(project(":core-privacy"))
implementation(project(":core-archive"))
implementation(libs.kotlinx.serialization.json)
implementation(libs.kotlinx.coroutines.android)
implementation(libs.androidx.core.ktx)
implementation(libs.androidx.lifecycle.runtime.ktx)
implementation(libs.androidx.lifecycle.viewmodel.compose)
implementation(libs.androidx.activity.compose)
implementation(platform(libs.androidx.compose.bom))
implementation(libs.androidx.ui)
implementation(libs.androidx.ui.graphics)
implementation(libs.androidx.ui.tooling.preview)
implementation(libs.androidx.material3)
debugImplementation(libs.androidx.ui.tooling)
}